Surgical knife depth gauge



FIG. 1 is a perspective view of a surgical knife depth gauge showing my new design;

FIG. 2 is an enlarged top plan view thereof;

FIG. 3 is an enlarged front elevational view thereof;

FIG. 4 is an enlarged bottom plan view thereof;

FIG. 5 is an enlarged right side elevational view thereof;

FIG. 6 is an enlarged left side elevational view thereof;

FIG. 7 is a cross-sectional view thereof, taken along the line 7--7 of FIG. 3;

FIG. 8 is a rear elevation view illustrating the doubling plate overlapped with the blade;

FIG. 9 is a plan view illustrating the doubling plate overlapped with the blade; and,

FIG. 10 is a front view illustrating the doubling plate overlapped with the blade. 

The ornamental design of a surgical knife depth gauge, as shown and described. 